I have bought BIQU Magicain 3D at $300 on Amazon, and I have started learning 3D CAD with freeCAD.
Movie of "BIQU Magician 3D" printing the part
The STL data is generated by this web site.
This is a case for this GPS module.
This is a stand for bluetooth headset:
This is a case for this small board:
Use this companion part to mount the case on DIN-rail:
This is a case for EnOcean temperature sensor:
This is a case for a very cheap oscilloscope "PCB-scope":
This is a case for thermistor "103AT-2" on this tiny universal board: